In circular motion the
Direction of motion is fixed
Direction of motion changes continously
Acceleration is zero
Velocity is constant
What happens to the air in a car tyre as a result of a motorway journey?
The temperature remains the same and the pressure increases
The temperature decreases and the pressure increases
The temperature and pressure both icrease
The temperature remains the same and the pressure decreases.
Which of the following statements below should be used while using the symbol for a unit of a physical quantity?
The symbol named after scientist should have capital letter.
They take plural forms
They can be written in full
They should be written only in the agreed symbols.
Which of the following is/are examples of rotary motion?
Motion of the blades of the ceiling fan
Motion of the potter's wheel
Motion of planets around the sun
All of these
Different size bags are required to pack separately one kilogram each of cotton, potatoes and iron chunks. Which property of matter explains this?
Temperature
Density
Mass
Pressure.
When a drill bores a hole in piece of wood, it describes.
(i) Rotary motion (ii) Translatory motion
(iii) Curvilinear motion (iv) Oscillatory motion
(iii) & (iv)
(i) & (ii)
(i) & (iii)
(i) & (iv)
The motion of the arms of a soldier marching along the roads is
Circular
Oscillatory
Rotatory
Non periodic
The smallest time measured by a wrist watch accurately is
1 milli second
60 seconds
1 second
1 hour
Match the following and select the correct option from the codes given below.
(a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
(a) - (iii), (b)- (ii), (c) - (i), (d) - (iv)
a- (i), (b)- (iv), (c) - (iii), (d) - (ii)
(a) - (iv), (b) - (iii), (c), - (ii), (d) - (i)
Which of the following is false?
The motion of a swing is rectilinear as well as circular
A guitar shows vibratory motion
Pendulum of a clock shows oscillatory motion
A ceiling fan shows rotatory motion.
